Bump package versions for 1.4.4-rc.6 release.

Bump package versions for 1.6-pre.0 release.

Merge branch 'abernix/fix-windows-dev-bundle-extract-error' into rele…

…ase-1.4.3.x

Add `-rc.n` suffix to `rate-limit`.

Bump version for 1.4.4-rc.3 release.

Bump package versions for 1.5-beta.13 release.

Bump package versions for 1.4.4-rc.2 release.

We (@abernix and I) have decided to abandon 1.4.3.3 in favor of 1.4.4,
because the changes we wanted to include are slightly more significant
than seems appropriate for a "patch" update.

Bump package versions for 1.4.3.3-rc.1 release.

Bump package versions for 1.4.3.3-rc.0 release.

Bump package versions for 1.5-beta.12 release.